and the 1/8" NPT pressure tap are accessible from the top

Precision Balanced: The metal blower wheel is factory-balanced to prevent shaft oscillation and extend the life of the blower motor bearings

5 Cv flow coefficient ensures maximum throughput with minimal pressure drop

though high-load environments with pets or construction may require more frequent changes to maintain optimal airflow

preventing scale buildup and potential sticking

Resideo ZD12X8TZ Damper 320734-701 and the 1/8" NPT pressureThe Resideo ZD12X8TZ is a professional grade 12x8 zone damper designed for precision airflow control in multi zone HVAC systems. This parallel blade damper features a heavy duty galvanized steel construction with a synchronous motor mounted on the 8 inch side for high torque reliability. Engineered as a power closed spring return open actuator system, it ensures the zone defaults to the open position during power loss, maintaining critical airflow.